JBL GTO 75.4 (serv.man2) Service Manual ▷ View online
7
1
2
3
4
5
6
8
A
B
C
D
E
C800
10/16V
10/16V
C06
2200/25"WL"
R54
47
47
R44
47
47
Q55
FQP50N06
R01
4.7K
4.7K
Q01
A1023Y
R02
4.7K
Q02
C3198GR
R05
8.2K
R04
56K
C05
2200/25"WL"
C03
104P
104P
R35
15K
C34
105(M)"TL"
C01
105(M)"TL"
C61
4700/50V"HC"
C51
470/50V"SMS"
D02
1N4004
R61
10K
TH01
50KTH
C67
4.7/50V
C57
4.7/50V
D52
FR154
D51
FR154
FR154
D53
FR154
C63
473P
473P
D54
FR154
R11
4.7K
R12
3.9K
C11
100/16V
Q11
A1266GR
Q12
A1266GR
R25
68K
68K
R13
10K
R14
10K
10K
C12
100/16V
D11
1SS133
R16
820
820
R31
1K
R32
22K
C15
10/25V
R33
33K
Q22
A1268GR
R34
15K
C16
47/25V
PROT
C33
473P
473P
U01
TL494CN
R21
24K
24K
C21
102(M)
R22
24K
C13
100/16V
C14
47/16V
R03
10/0.5W
R41
220/0.5W
Q23
A1266GR
C04
2200/25"WL"
D04
1SS133
R60
10.5KF
R42
1K
R43
47
47
R53
47
47
R52
1K
D03
1SS133
Q33
A1266GR
R51
220/0.5W
D01
1N5404
L03
CL-310
FH01
30Ax2
R46
47
T01
4T:11T:8T:8T
Q54
FQP50N06
Q43
FQP50N06
Q21
C3198BL
D41
YG225D2
D42
YG225D2
C52
4700/50V"HC"
C62
470/50V"SMS"
C22
104P
R15
10
C08
222(M)
R30
100/2W
R45
47
C32
473P
W1
60m/m
C31
105(M)"TL"
C53
473P
473P
Q53
FQP50N06
L01
CL-510
L02
CL-510
C60
104P
104P
R62
4.7KF
VEE1
VCC1
VEE2
VCC2
R55
47
47
R56
47
47
Q56
FQP50N06
Q44
FQP50N06
Q46
FQP50N06
Q45
FQP50N06
R90
47K
47K
R91
22K
22K
LED01
HNRD-3401L
R92
1K
1K
Q90
C3198GR
R63
430K
430K
W2
60m/m
14.4V
13.62V
13.56V
13.86V
4.45V
0.695V
12.90V
5V
6.14V
5V
0V
5V
5V
0V
0V
38.5V
38.5V
0V
13V
14.4V
1
1
1
14.4V
-38.6V
38.6V
-27.7V
27.7V
(0.7x15):(0.7x4):(0.7x1):(0.7x1)
CASE GND
CASE GND
16 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
B+
REM
GTO 75.4 Page2 Schematic
24
7
1
2
3
4
5
6
8
A
B
C
D
E
C461
104(M)
R461
4.7/0.5W
R342
5.6K
C441
2.2/50V
R332
5.6K
R420
1KF
R320
1KF
1KF
C411
47P
R310
10K
U305-B
7
6
5
NJM2068M
-
+
R315
5.6K
R481
56K
PROT
C320
2.2\50V"SRE"
SW301-B
JSS2301S120
U303-B
7
6
5
NJM2068M
-
+
U304-B
7
6
5
NJM2068M
-
+
C313
823M"TL"
R414
10K
SW301-A
JSS2301S120
R413
5.6K
TER02-B
ST-11A-2-8P
C415
823M"TL"
C321
68P
C420
2.2\50V
C421
68P
R421
22KF
R321
22KF
22KF
R447
2.7K
R445
1K
R443
22
R444
22
R433
22
VEE1
VEE1
R361
4.7/0.5W
R381
56K
Q351
C3200GR
C351
100P
D351
1SS133
R352
15K
R351
1.5K
R371
13.7KF
C371
100/16V"SRE"
R372
1KF
R360
0.1/3W
Q335
TIP35C
Q345
TIP36C
Q344
A1023Y
Q334
C1027Y
R350
120
R336
47
R346
47
Q343
C3198GR
R337
3.9K
3.9K
Q340
C3200GR
Q333
A1266GR
C331
2.2/50V
R335
1K
R334
22
R333
22
R312
10K
R344
22
R343
22
R345
1K
R347
2.7K
Q341
A1266GR
Q342
A1266GR
Q332
C3198GR
Q331
C3198GR
C442
100P
100P
C342
100P
R434
22
R435
1K
Q431
C3198GR
Q432
C3198GR
R370
0.1/3W
R442
5.6K
A
Q442
A1266GR
Q441
A1266GR
Q433
A1266GR
C432
100P
100P
Q440
C3200GR
R437
3.9K
Q443
C3198GR
R446
47
C340
473(M)"TL"
R331
1K
C440
473(M)
473(M)
R462
680/2W
R362
680/2W
R451
1.5K
R471
13.7KF
VCC1
R472
1KF
C471
100/16V
C493
47P
Q435
TIP35C
TIP35C
Q445
TIP36C
TIP36C
Q444
A1023Y
Q434
C1027Y
C341
2.2/50V
C492
104(M)"TL"
R441
1K
R450
120
U307-B
7
5
6
NJM2068M
+
-
Q451
C3200GR
R341
1K
1K
R436
47
C325
10/16V"SRE"
VCC1
R431
1K
R496
6.8K
C431
2.2/50V
C305
22P
R493
39K
C451
100P
100P
R497
150K
150K
D451
1SS133
C361
104(M)
R452
15K
15K
VR303-A
20KB
C332
100P
100P
R432
5.6K
5.6K
C306
22P
R492
1K
R491
1K
R411
10K
C405
22P
VR302A
50KC
C393
47P
R465
1K
C392
104(M)"TL"
U310-B
7
6
5
NJM2068LD
-
+
U306-B
7
5
6
NJM2068M
+
-
R396
6.8K
6.8K
R393
39K
R466
1K
REAR-L
VR302C
50KC
REAR-R
R365
1K
R397
150K
150K
R366
1K
U310-A
1
3
2
NJM2068LD
+
-
C303
22/16V"SRE"
R302
47KF
47KF
R301
22KF
22KF
VR303-B
20KB
C304
10P
R303
47KF
47KF
C406
22P
R311
10K
VR302D
50KC
R423
270K
270K
U301-A
1
2
3
NJM2068LD
-
+
R424
270K
270K
R324
270K
270K
R470
0.1/3W
R392
1K
R306
47KF
47KF
R307
1K
C315
823M"TL"
C423
22/16V"SRE"
R391
1K
R313
5.6K
R314
10K
C311
47P
C424
22/16V"SRE"
VR302B
50KC
C491
104(M)"TL"
R412
10K
U307-A
1
3
2
NJM2068M
+
-
U306-A
1
3
2
NJM2068M
+
-
C413
823M"RL"
U304-A
1
2
3
NJM2068M
-
+
R407
1K
U303-A
1
2
3
NJM2068M
-
+
R415
5.6K
C324
22/16V"SRE"
U305-A
1
2
3
NJM2068M
-
+
C323
22/16V"SRE"
R410
10K
C391
104(M)"TL"
R460
0.1/3W
C401
102P
R408
820
C402
22/16V"SRE"
C403
22/16V"SRE"
R402
47KF
47KF
R401
22KF
22KF
C404
10P
R403
47KF
47KF
U301-B
7
6
5
NJM2068LD
-
+
C301
102P
RCA101-B
DJB-562
C302
22/16V"SRE"
R405
47KF
47KF
C455
10/16V
R406
47KF
47KF
R355
15KF
C356 12P
R356 91KF
R323
270K
270K
R308
820
VR301-B
20KB
C355
10/16V
C456
20P
R455
15KF
15KF
R457
9.31KF
R456 47KF
U302-A
8
3
2
2
1
NJM2068M
R422
10K
U302-B
NJM2068M
7
5
6
4
VR301-A
20KB
R322
10K
RCA301-A
DJB-562
R305
47KF
47KF
HI-INPUT
HI301
LAD1140-04PBK
C425
10/16V"SRE"
SW302
JSS2219
C495
473P
473P
C496
473P
473P
C396
473P
473P
C395
473P
473P
-12.8V
12.95V
37.6V
38.1V
0.759V
-0.607V
-0.607V
0.568V
0.546V
0.546V
0.238V
0V
0V
-0.483V
-0.987V
-38.1V
-37.6V
12.95V
-12.80V
37.6V
38.1V
0.759V
0.238V
0V
0V
-0.607V
-0.607V
0.568V
0.546V
0.546V
-37.6V
-38.1V
-0.987V
0V
-0.324V
-0.483V
2
2
2
2
1
1
-15V
+15V
-15V
-38.6V
38.6V
-38.6V
38.6V
38.6V
+15V
*NJM2068LD*
+15V
-15V
+15V
STEREO
MONO
LOW INPUT L-CH
LOW INPUT R-CH
-15V
FLAT
FLAT
HPF
HPF
LPF
LPF
R/LOUT
R/ROUT
+
-
-
+
50Hz 0~12dB BASSBOOST
32-320Hz VARIABLE X-OVER
#8PIN : +15V
#4PIN : -15V
GTO 75.4 Page3 Schematic
25
C800
10/16V
C06
2200/25"WL"
R54
47
R44
47
Q55
FQP50N06
R01
4.7K
Q01
A1023Y
R02
4.7K
Q02
C3198GR
R05
8.2K
R04
56K
C05
2200/25"WL"
C03
104P
R35
15K
C34
105(M)"TL"
C01
105(M)"TL"
C61
4700/50V"HC"
C51
470/50V"SMS"
D02
1N4004
R61
10K
TH01
50KTH
C67
4.7/50V
C57
4.7/50V
D52
FR154
D51
FR154
D53
FR154
C63
473P
D54
FR154
R11
4.7K
R12
3.9K
C11
100/16V
Q11
A1266GR
Q12
A1266GR
R25
68K
R13
10K
R14
10K
C12
100/16V
D11
1SS133
R16
820
R31
1K
R32
22K
C15
10/25V
R33
33K
Q22
A1268GR
R34
15K
C16
47/25V
PROT
C33
473P
U01
TL494CN
R21
24K
C21
102(M)
R22
24K
C13
100/16V
C14
47/16V
R03
10/0.5W
R41
220/0.5W
Q23
A1266GR
C04
2200/25"WL"
D04
1SS133
R60
10.5KF
R42
1K
R43
47
R53
47
R52
1K
D03
1SS133
Q33
A1266GR
R51
220/0.5W
D01
1N5404
L03
CL-310
FH01
30Ax2
R46
47
T01
4T:11T:8T:8T
Q54
FQP50N06
Q43
FQP50N06
Q21
C3198BL
D41
YG225D2
D42
YG225D2
C52
4700/50V"HC"
C62
470/50V"SMS"
C22
104P
R15
10
C08
222(M)
R30
100/2W
R45
47
C32
473P
W1
60m/m
C31
105(M)"TL"
C53
473P
Q53
FQP50N06
L01
CL-510
L02
CL-510
C60
104P
R62
4.7KF
VEE1
VCC1
VEE2
VCC2
R55
47
R56
47
Q56
FQP50N06
Q44
FQP50N06
Q46
FQP50N06
Q45
FQP50N06
R90
47K
R91
22K
LED01
HNRD-3401L
R92
1K
Q90
C3198GR
R63
430K
W2
60m/m
1
1
1
1
B
GTO75.4II
2004.02.28
2004.02.28
2004.02.28
2004.02.26
"RX"->"WL" C04,05,06
CL 1-40031A
CLS-AP-3038
07
3
1
JBL
DIGITAL CO.LTD
CHUNG LAM
(0.7x15):(0.7x4):(0.7x1):(0.7x1)
CASE GND
CASE GND
16 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
12V
B+
REM
GTO 75.4II
GTO 75.4II Page1 Schematic
26
HI-INPUT
HI101
LAD1140-04PBK
R105
47KF
C128
4.7/50V"SRE"
R241
1K
C241
2.2/50V
R231
1K
C231
2.2/50V
R142
5.6K
R141
1K
C141
2.2/50V
R132
5.6K
RCA101-A
DJB-554A
R122
10K
C211
47P
U111-A
1
3
2
NJM2068LD
+
-
VR101-A
20KB
R110
10K
U102-B
NJM2068M
7
5
6
4
R222
10K
U102-A
8
3
2
1
NJM2068M
U105-B
7
6
5
NJM2068M
-
+
R115
5.6K
PROT
C228
4.7/50V"SRE"
U103-B
7
6
5
NJM2068M
-
+
R256 47KF
C132
100P
R257
5.1K
R255
9.1KF
R126
10KF
C256
39P
C155
10/16V
U104-B
7
6
5
NJM2068M
-
+
VR101-B
20KB
R108
240F
R123
270K
C113
823M"TL"
R214
10K
VEE2
R213
5.6K
R156 91KF
C156
22P
R155
9.1KF
R206
47KF
C255
10/16V
C215
823M"TL"
R205
47KF
R131
1K
C131
2.2/50V
C102
22/16V"SRE"
U111-B
7
5
6
NJM2068LD
+
-
R225
10KF
R228
1K
RCA101-D
DJB-554A
VEE1
R229
100K
RCA101-B
DJB-554A
C101
10/16V"SRE"
R127
1K
U101-B
7
6
5
NJM2068LD
-
+
R129
100K
RCA101-C
DJB-554A
R203
47KF
C204
10P
R201
22KF
R202
47KF
C203
22/16V"SREz"
C202
22/16V"SRE"
C181
100/16V
R281
56K
R227
1K
C120
2.2\50V"SRE"
R112
10K
R208
240F
C123
22/16V"SRE"
C124
22/16V"SRE"
R207
1K
R211
10K
R128
1K
VEE1
VCC1
VCC1
C232
100P
TER02-A
ST-11A-2-8P
C224
22/16V"SRE"
R120
5.6KF
VR102A
50KC
C223
22/16V"SRE"
C121
68P
C220
2.2\50V
R107
1K
R106
47KF
R226
10KF
C221
68P
R124
270K
R221
22KF
VR102C
50KC
R121
22KF
R220
5.6KF
R247
2.7K
R224
270K
U101-A
1
2
3
NJM2068LD
-
+
R111
10K
VR102D
50KC
C115
823M"TL"
R113
5.6K
R114
10K
R245
1K
R243
22
R244
22
R233
22
SW101-A
JSS2301S120
C111
47P
VR102B
50KC
SW101-B
JSS2301S120
R212
10K
C213
823M"TL"
VCC2
R242
5.6K
Q281
C3198GR
U104-A
1
2
3
NJM2068M
-
+
Q181
C3198GR
R181
56K
Q151
C3200GR
C151
100P
D151
1SS133
R152
15K
C161
104(M)
R161
4.7/0.5W
R151
1.5K
R171
33KF
C171
100/16V"SRE"
R172
1KF
C291
220/16V
D291
1N4744(15V)
R291
150/2W
R160
0.1/3W
Q135
TIP35C
Q145
TIP36C
Q144
A1023Y
Q134
C1027Y
R150
120
R136
47
R146
47
Q143
C3198GR
R137
3.9K
Q140
C3200GR
Q133
A1266GR
D191
1N4744(15V)
C191
220/16V
R191
150/2W
R135
1K
R134
22
R133
22
R144
22
R143
22
R145
1K
U103-A
1
2
3
NJM2068M
-
+
R215
5.6K
U105-A
1
2
3
NJM2068M
-
+
R210
10K
R125
10KF
R147
2.7K
R223
270K
Q141
A1266GR
Q142
A1266GR
Q132
C3198GR
Q131
C3198GR
R262
680/2W
R162
680/2W
R170
0.1/3W
C242
100P
C142
100P
R234
22
R235
1K
Q231
C3198GR
Q232
C3198GR
Q242
A1266GR
Q241
A1266GR
Q233
A1266GR
Q240
C3200GR
R237
3.9K
Q243
C3198GR
R246
47
R236
47
R250
120
Q234
C1027Y
Q244
A1023Y
Q245
TIP36C
Q235
TIP35C
C206
22P
C271
100/16V
R272
1KF
R271
33KF
R251
1.5K
R261
4.7/0.5W
C261
104(M)
R252
15K
R232
5.6K
D251
1SS133
C251
100P
100P
Q251
C3200GR
C240
473(M)
C140
473(M)"TL"
C192
330/16V
C292
330/16V
C400
104P
C200
104P
R103
47KF
C104
10P
R101
22KF
R102
47KF
C103
22/16V"SRE"
FRONT-R
REAR-R
U110-A
1
3
2
NJM2068LD
+
-
R166
1K
R165
1K
FRONT-R
FRONT-L
R266
1K
U110-B
7
6
5
NJM2068LD
-
+
R265
1K
REAR-L
FRONT-L
C205
22P
C106
22P
C105
22P
C126
22P
C226
22P
R270
0.1/3W
C225
10/16V"SRE"
C125
10/16V"SRE"
R260
0.1/3W
SW102
JSS2219
LED02
TOL-30aSBaCAa-B2
R192
1K
R292
1K
C410
104P
C210
104P
C195
473P
C196
473P
C296
473P
C295
473P
C201
10/16V"SRE"
2004.08.10
C101,201 102P->10/16V"SRE"
CL 1-40239A
4
4
4
3
3
3
3
3
3
3
3
3
3
3
3
2
2
2
2
2
1
1
1
E
GTO75.4II
2004.08.14
2004.08.14
2004.08.14
2004.06.14
R257 9.31KF->5.1K/C156 12P->22P/C256 20P->39P
R108,208 820->240F / R155,255 15K->9.1K
R120,220 1KF->5.6K / R171,271 13.7FK->33KF
CL 1-40182A
2004.02.26
100K->270K R123,124,223,224
CL 1-40061A
100->1K R166,266
2004.01.30
CL 1-40027A
CLS-AP-3038
08
3
JBL
DIGITAL CO.LTD
CHUNG LAM
2
+15V
-15V
+15V
STEREO
MONO
L-OUT
LOW INPUT L-CH
LOW INPUT R-CH
R-OUT
-15V
+15V
-15V
-15V
-15V
+15V
FLAT
FLAT
HPF
HPF
LPF
LPF
A
F/LOUT
F/ROUT
+
-
-
+
32-320Hz VARIABLE X-OVER
GTO 75.4II
GTO 75.4II Page2 Schematic
27
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